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CVE-2026-40490

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. When redirect following is enabled (followRedirect(true)), versions of AsyncHttpClient prior to 3.0.9 and 2.14.5 forward Authorization and Proxy-Authorization headers along with Realm credentials to arbitrary redirect targets regardless of domain, scheme, or port changes. This leaks credentials on cross-domain redirects and HTTPS-to-HTTP downgrades. Additionally,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e5e1dce6fbf878a38d29613aee4b4822aef4a80010eff0b62c7694eaf6d5ece0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"async-http-client","vendor":"AsyncHttpClient","versions":[{"status":"affected","version":">= 3.0.0.Beta1, < 3.0.9"},{"status":"affected","version":"< 2.14.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/AsyncHttpClient/async-http-client/commit/6b2fbb7f8","tags":["x_refsource_MISC"],"url":"https://github.com/AsyncHttpClient/async-http-client/commit/6b2fbb7f8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/references/1
{"name":"https://github.com/AsyncHttpClient/async-http-client/commit/ae557ad35246721c09dafb2976609cd0004e78ae","tags":["x_refsource_MISC"],"url":"https://github.com/AsyncHttpClient/async-http-client/commit/ae557ad35246721c09dafb2976609cd0004e78ae"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/references/2
{"name":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.14.5","tags":["x_refsource_MISC"],"url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.14.5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/references/3
{"name":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.9","tags":["x_refsource_MISC"],"url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/references/4
{"name":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-cmxv-58fp-fm3g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-cmxv-58fp-fm3g"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e5d5507c43af629044ae361b7318eb168ba2874f4e94cf08a359d3f017a87f83 · sha256:bc7f9818d1d204b2… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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